Mm H Wicg Ul Mekscote Section 6 3 Practice S V Lu Egg J 7 Jr L L Previous F 1 I

My question is for part 2.why when we enter the data in the the calculator the standard deviation is entered as the highlight info on the handwritten picture

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Given that: n 115, 48 and 12 a)Find the probability that will be between 45 and 50 .x50 48 45 48P 45 X 50 P Z 12 / 115 12 / 115 P 2.68 Z 1.787 P Z 1.787 P Z 2.68 0.9630 0.0037 0.9594Hence, the…